1. $18 Million Benefits of Using Ground Tire Rubber In Asphalt: Eleven Years of Success George Way, P.E. Arizona DOT

3. Flagstaff I-40 Elev. 2133 Meters 254 cm of snow Lowest Temp. -31 C

6. I-40 Traffic 20,000 VPD 35% Trucks 2.3 million ESAL’s/Year

9. Riordan Project Built 1985 25 cm HMA 15 cm Perm HMA 15 cm Drainable AB

10. RIORDAN CROSS SECTION 28 cm AC 15 cm BTB 10 cm AB Eng. Fabric Sub Grade

24. Built 1969 20 cm PCCP 18 cm CTB Clay/Cinder Subgrade

25. I-40 Pavement Badly Cracked Rough Ride High Maintenance

31. Flagstaff Overlay Crack & Seat 7.5 cm HMA 5 cm AR-HMA 1.25 cm AR-OGFC

32. FLAGSTAFF CROSS SECTION 1.25 cm AR-OGFC 5 cm AR-AC 7.5 cm AC PCCP Crack & Seat Sub Grade

33. # 200 # 100 # 50 # 40 # 30 # 16 # 10 # 8 # 4 1/4” 3/8” 1/2” 3/4”

34. Asphalt Rubber 80 % Asphalt 20 % Ground Tire Rubber

35. Percent Binder 4.6% HMA/AC-20 6.6% AR-HMA 9.0% AR-OGFC

36. Metric Ton of Mix

37. HMA-Asphalt Binder AC-20 PG 64-16

38. Asphalt Rubber Binder AC-10 PG 58-22

50. SHRP SPS-6 National Overlay Study Focus on Thickness 10 cm & 20 cm HMA Overlay

54. SHRP SPS-6 Overlay PCCP 20 cm HMA 10 cm HMA 5 cm AR-HMA/5 cm HMA

72. Cracking Flagstaff ARFlagstaff AR RiordanRiordan

73. Cracking in Meters

74. Percent Cracking

75. Benefits of AR $18 million savings Four Years Less Construction Time

76. Implementation Over 2,500 miles of AR projects built since 1990